SYMPTOMS OF WORN ENGINE MAIN BEARINGS
Автокөліктер мен көлік құралдары
In this topic I discuss the symptoms of worn engine main bearings. I also explain what cause main bearings to go bad and fail and how it can be prevented. If you're hearing noise from the bottom end of the engine it could be a sign the crankshaft bearings are on its way out. A failed bearing can cause engine to seize.
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This video needs more like because teaching knowledge is not free
Valuable information! Key point: Change your oil on time.
Legend! I pray i can replace the crank and bearings rather than replacing the whole engine. 2015 Golf R! 😢
You were the only mechanic that helped me diagnose my Toyota engine's vibration problem when coming to a stop! Needed total main/piston rod bearing replacement!! Thanks so much! ❤
Thanks for that. Very clear explanation. Appreciated.
Thank you for sharing valuable knowledge
Another great video thanks for sharing.
Awesome explanation.thank so much
@damiropadobarglumskiperiod505
7 ай бұрын
I have certain sound that goes away when engine is idle .and increases with high arp specialy in low gear and uphil.can it be the the bearings
amazing video
Daer SIR I am from suif African 🇿🇦 I ryfe a Geely LC 1.3 tween came.i need to thank you for your video.quisten what' happen if oil WHAS lowe (oil lit came on) and then
I have a a issue with corolla 2zrfe engine when I start in the morning in Canada it’s start with a sound like belt are pulley I change the belt but still have the sound but as soon as it warm up it’s ok
Wow you are amazing my friend. This video is very informative. Thank you so much for explaining.
Metal shavings could be rod bearings also
I have a 1974 carb-converted Porsche 914-4 that came to me with grossly contaminated engine oil; the drained oil looked had a white 'mocha' coffee appearance when I removed it...evidence to me that some unknowing person had perhaps pressure-washed the engine bay and the dual Weber carbs entrained water into the oil sump. The engine has a low sort of variable 'rumbling/grinding' sound that suggests to me that it may have sustained main engine bearing damage from being run with that contaminated oil. Does this sound like a reasonable hypothesis? Is it possible to accurately confirm or rule-out main bearing damage other than a tear-down for direct inspection, if there doesn't appear to be any metal shavings in the oil and the oil pressure seems to be within normal limits? A 914 engine main bearing replacement procedure would be EXPEN$IVE, needless to say... Thanks. Excellent instructional video, by the way!
When is crankshaft polishing appropriate? is it every time you replace the bearings or only when you can see and feel scratches on your nails and fingers or no shine at all? isn't the smoothness and relatively smoothness the most important thing?
just subsribed. how do i tell if knok is because of rod or main bearing ?..
If 20w 50 is being used with old bearings....and then the bearings are replaced should I go back with 10w 40 or 30 with the new bearings? Would 20w50 cause a circulation problem if an engine has new bearings?
If diesel fuel is going down into the oil pan, caused by fuel injector problems, how long does it take before you can lose the engine ?
Good video man. So what is advised to use to check clearance of the bearings, plastiguage reassembled and torque to spec then recheck? Or is there a more precise way? How to find the tolerances for a vehicle or tq specs to do this process? And on say performance engines do these tolerances need to be changed if say you add about 400 whp more than it already has over stock? Sorry for the many questions but seems like you know what your talking about.
@Top5AutoRepairs
11 ай бұрын
For procedure and spec I use All Data.
@joshreynolds729
11 ай бұрын
@@Top5AutoRepairs Thank you. Would you know if they have 2016 dodge hellcat specs. And is that like a monthly subscription. Your probably a mechanic so you probably have it at work.
Hy ,i have low oil light on idle only when the engine becomes hot after sometimes it goes off , is this main bearing problem?
I'm rebuilding motorcycle engine. The crank bearings have colors but bottom crank bearings are black and top are blue ? Shouldn't the colors match on bottom and top crank bearings ?
we are 20 years professional engine parts OEM manufacturer.Our quality is high and stable.
Thanks for this video! What grit sand paper do you recommend using on the crankshaft journals?
@Top5AutoRepairs
9 ай бұрын
600-1,000. Super fine or ultra fine.
@jeremyjones8872
Күн бұрын
@@Top5AutoRepairsThank you for your videos,.question,ive been trying to figure out my oil pressure issue on 07silverado,3mechanics later and over $1k i didnt know until watchn you.but can my bearings be issue if NO NOISE but round shavings in pan and no oil pressure after 5mins running?? Any info greatly appreciated
Hi why or what cause my crankshaft to bind when i thighten the connecting rid on the journal. It werent spin by hand or even using a rachet
@zakiramjan9822
2 ай бұрын
Bearings clearances are too tight
great video sir, scary topic do you believe an oil test can help tou judge the health of my engine, what results am i looking for?
@johndelong5574
11 ай бұрын
Examine oil and filter paper for tiny shiny or grayish particles. Use a magnet to find steel
@Top5AutoRepairs
11 ай бұрын
Yes oil pressure test
Hey, i wanted to ask. I got aluminium in my oil filter only. I went to change rod bearings and found that they look like brand new. There also was no metal in oil or pan, only in oil filter. Is it likely my oil pump is giving up? It looks scored. I didnt check main bearings tho, but when rod bearings looks good, mains should be good too as rod gets oil from main, right?
@icecolddrone267
9 ай бұрын
Could be a actuator that broke.
My dad thinks he can drive with bad main bearings forever😡 He won't let me take the engine out of the car for a full rebuild😡 I took the oil pan off and the connecting rod bearings just have minor stuff from recirculating shavings from the mains but they are definitely not the source of the knock.
Hey none of these symptoms just hear a whining and car dies? Opinions
Ive rebuild 1980s dirt bike engines and wear on transmission shafts from bearing was severe therefore i dont buy high milage cars. Engine wear down
Can I access main bearings from under the car? i have a Mazda CX5
@blazem2400
2 ай бұрын
It would be hard because it’s upside down
Hello, nobody talks about the main and rod bolts ? Reusable or not ?
@Top5AutoRepairs
13 күн бұрын
Reusable as long the engine did not overheat